At one time it was thought that these matrix grains might be pristine nebular dust, the sort of stuff from which chondrules and inclusions were made.
曾经有人认为，这些基质颗粒可能是原始的星云尘埃，即形成陨石球粒及其内含物的物质。
They then linked each sample with its likely source region and calculated the rate of dust deposition over time.
之后研究人员通过沙尘样本找寻到其对应来源地，并计算这些沙尘随时间积聚的速率。
Although the stars were just half a million years old-still in their infancy in stellar time scales-most had already lost their planet-forming disks of gas and dust.
虽然这些恒星只有五十万年——按照恒星的时间尺度计算，它们还处于婴儿期——但是大都已经失去了其形成行星的由气体与尘埃组成的圆盘。
Scientists have known for a long time that aerosols such as soot, dust and other small particulate matter, alter cloud density and the radiative balance of the atmosphere.
科学家们很早之前就发现，诸如煤烟、灰尘和其他细小的微粒，能改变云体的密度及大气的辐射平衡。
Because of this, over time, ripples get covered with dust, possibly explaining the bright tone visible here.
波纹比沙丘移动的慢，因此经过一段时间，波纹会将沙丘掩盖，这也就解释了这里明亮的色调。
Most of us would rather be charred to ashes from over-excitement than turned to dust a failure before our time.
我们中大多数人宁愿过分兴奋而被烧成灰烬，而不愿在我们这个时代面前，转变方向以抹去(dust)失败的灰尘。
Comets lose ice and dust each time they come near the sun, leaving behind trails of debris.
彗星每次接近太阳时，都会将一部分冰和尘埃遗留在彗尾的遗迹中。
Yellow bands—larger, coarse particles—around the Middle East, North Africa, and western North America likely indicate dust and sand storms as the northern hemisphere reaches the driest time of year.
黄色地带，也就是分布着较大的较粗糙粒子的中东地区、北非以及北美西部，随着北半球到达一年中最干旱的季节，很可能预示着有沙尘暴灾害。
The crash is expected to displace around 350 tonnes of debris, pushing a cloud up as high as 10km above the surface and casting the dust into direct sunlight for the first time in millions of years.
这次撞击预计将掀起近350多吨的碎片，形成约10公里高的烟尘团，将这些尘土数百万年来首次曝露于阳光的直接照射之下。
One of the reasons that your ebook ended up gathering virtual dust is because there's never going to be a "perfect" time to write.
你的电子书被尘封的原因之一是，永远不会有“完美的”写作时间。
He was just a regular person, albeit a supremely talented one, and time makes dust of every person, no matter how well they sing.
岁月让所有人成灰，无论他们有怎样美好的歌喉。
The dust cloud is a result of a volcanic eruption at the Eyjafjallajoekull glacier which erupted on March 20, for the first time since 1821.
这些灰云是埃亚·菲亚·德拉冰川上的火山3月20号爆发所产生的，这是从1821年以来这座火山的第一次喷发。
Do projects sit on the corner of my desk gathering dust simply because I believe I don't have time (or don't know how) to do them perfectly?
项目在我桌子角落上只是积灰尘的原因是不是只因为我相信我没有事件(或者不知道如何)来完美做好它们？
Electrostatic dust, strong oil and chemical dust adsorption ability, long time to form a layer of solid transport membrane.
静电对尘埃、油污和化学粉尘吸附才能很强，时刻长了构成一层坚固的交通膜。
Now that the feature is turned off, it's time to dust off useful tools (eg. project setup tool hoe) that automate the process of building the Gem and uploading it to RubyForge.
既然这个功能已经被关闭了，是时候重新拿起那些能自动构建Gem并将其上传至RubyForge的工具（例如项目配置工具Hoe）了。
If you've got shelves full of old cassettes that have garnered more dust than your first grade spelling bee trophy, it may be time to don the face mask and sift through them.
如果你有获得超过一年级拼字比赛奖杯的灰尘的旧磁带的货架上，它可能是时间戴上面罩，并通过他们筛选。
In 1907, Einstein likely did not foresee a time when dust-sized particles of glass could be trapped and suspended in air by dual laser beam "optical tweezers."
1907年时，爱因斯坦似乎没能预见到这样的时代，在这个时代，“镭射光钳”发射双重激光，从而困住灰尘一般大小的玻璃微粒，使它们悬浮在空中。
Watch size is small and the internal structure is very complex and sophisticated, a little bit of dust or clothing fibers will affect the time of the watch.
手表尺寸虽小内部结构确非常复杂且精密，一点点小灰尘或是衣物纤维都会影响手表的走时。
Looking at own injury, I obtain a shock, the exportation of dust compares with in increase lusty final time many.
看着自己的伤害，我大吃一惊，尘埃的输出比起上次又加强了不少。
At the same time, smoke from burning coal and all kinds of dust are also important factors.
同时，煤炭燃烧的浓烟和各种各样的灰尘也是重要的因素。
Because of the short time use of oil on the belt after the operation, after due to excessive dust accumulation, final days and months multiplying belt damage.
就是因为其在皮带上使用了机油后短时间内可以运转，过后因大量灰尘聚集，日积月累最终皮带损坏。
Mary Academy is still a simple piece of white stone briefly carved, but as time marches on, duanwenw, . com it may be spoiled by dust, worn out by weather, or broken into separate pieces.
圣玛丽亚女校仍是一块只经过稍微雕琢的普通白石，但是随着时光的流逝，它也许会被尘埃染污，受风雨侵蚀，或破裂成片片碎石。
Air conditioning in the use of a period of time, screen pack, evaporator and air supply systems will build up large dust, dirt, producing a large amount of bacteria, virus.
空调在使用一段时间后，过滤网、蒸发器和送风系统上会积聚大量灰尘、污垢，产生大量的细菌、病毒。
Experiments are done to find the different and the best ways foam catches dust, the relation between the time of foam exiting and the quantity of dust being caught.
通过实验，研究了泡沫捕捉粉尘不同方式与过程，得出了最优捕捉粉尘的方式、泡沫破裂时间与捕尘量的关系。
At the same time, the rain is also mixed with some of the naked eye can not see the dust, after the sun, will be derived from a large number of oxides, time to clean up very difficult to clean.
同时，雨水中还夹杂一些肉眼看不到的灰尘，经过阳光照射后，会衍生出大量的氧化物，时间长了想清理干净非常不易。
Can not help but have thoughts dust-laden memories of being open, I picked up the fragments of memory, I remembered back to that period of time.
也不禁思绪飘飞，尘封的记忆被打开，我拾起记忆的碎片，回到那段我难以忘怀的时光。
Can not help but have thoughts dust-laden memories of being open, I picked up the fragments of memory, I remembered back to that period of time.
也不禁思绪飘飞，尘封的记忆被打开，我拾起记忆的碎片，回到那段我难以忘怀的时光。
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